Can I Create a Linked Duplicate Consisting of Only Those Mesh Parts Defined by a Vertex Group Owned by the Duplicated Object?
You can &quot;Duplicate Linked&quot; the object with Alt+D.
Then, on the duplicate, add a Mask modifier, and select the Vertex Group you want to keep.
(You can also select the vertex group you want to hide, if you tick &quot;Invert&quot; (double arrow icon) next to the Vertex group field)